Problem with old Webserver

I build a Webpage with Mobirise. It is so amazing easy. I was really surprised. This webpage is made for running on an real Time Operation System (RTOS) from Texas Instruments. This Operation System just supports an really old Webserver. It says something like HTTP/1.0. When I host the Webpage there it looks ok, but with some bugs. One thing is, that a table looks different and the text in the fooder is not well separated. Here some Pics: How it should look: How it looks: